diff --git a/lib/index.js b/lib/index.js
index d5d63c6..2ef2cf3 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -16,6 +16,11 @@ function protocolToRepresentation (protocol) {
   return protocolToRepresentationMap[protocol] || protocol.slice(0, -1)
 }
 
+function lastIndexOfBefore (str, char, beforeChar) {
+  const startPosition = str.lastIndexOf(beforeChar)
+  return str.lastIndexOf(char, startPosition > -1 ? startPosition : Infinity)
+}
+
 const authProtocols = {
   'git:': true,
   'https:': true,
@@ -189,12 +194,11 @@ const isGitHubShorthand = (arg) => {
 // attempt to correct an scp style url so that it will parse with `new URL()`
 const correctUrl = (giturl) => {
   const firstAt = giturl.indexOf('@')
-  const lastHash = giturl.lastIndexOf('#')
-  let firstColon = giturl.indexOf(':')
-  let lastColon = giturl.lastIndexOf(':', lastHash > -1 ? lastHash : Infinity)
+  // ignore colons that come after the hash since that could include colons such as:
+  // git@github.com:user/package-2#semver:^1.0.0
+  const lastColonBeforeHash = lastIndexOfBefore(giturl, ':', '#')
 
-  let corrected
-  if (lastColon > firstAt) {
+  if (lastColonBeforeHash > firstAt) {
     // the last : comes after the first @ (or there is no @)
     // like it would in:
     // proto://hostname.com:user/repo
@@ -205,44 +209,33 @@ const correctUrl = (giturl) => {
     // proto://:password@hostname.com:user/repo
     // proto://username:password@hostname.com:user/repo
     // then we replace the last : with a / to create a valid path
-    corrected = giturl.slice(0, lastColon) + '/' + giturl.slice(lastColon + 1)
-    // // and we find our new : positions
-    firstColon = corrected.indexOf(':')
-    lastColon = corrected.lastIndexOf(':')
+    giturl = giturl.slice(0, lastColonBeforeHash) + '/' + giturl.slice(lastColonBeforeHash + 1)
   }
 
-  if (firstColon === -1 && giturl.indexOf('//') === -1) {
+  if (lastIndexOfBefore(giturl, ':', '#') === -1 && giturl.indexOf('//') === -1) {
     // we have no : at all
     // as it would be in:
     // username@hostname.com/user/repo
     // then we prepend a protocol
-    corrected = `git+ssh://${corrected}`
+    giturl = `git+ssh://${giturl}`
   }
 
-  return corrected
+  return giturl
 }
 
 // try to parse the url as its given to us, if that throws
 // then we try to clean the url and parse that result instead
 // THIS FUNCTION SHOULD NEVER THROW
 const parseGitUrl = (giturl) => {
-  let result
   try {
-    result = new url.URL(giturl)
+    return new url.URL(giturl)
   } catch {
     // this fn should never throw
   }
 
-  if (result) {
-    return result
-  }
-
-  const correctedUrl = correctUrl(giturl)
   try {
-    result = new url.URL(correctedUrl)
+    return new url.URL(correctUrl(giturl))
   } catch {
     // this fn should never throw
   }
-
-  return result
 }
diff --git a/test/github.js b/test/github.js
index 3311f32..38a5ba3 100644
--- a/test/github.js
+++ b/test/github.js
@@ -31,157 +31,158 @@ const valid = {
   //
   // NOTE these do not accept auth at all
   'foo/bar': { ...defaults, default: 'shortcut' },
-  'foo/bar#branch': { ...defaults, default: 'shortcut', committish: 'branch' },
+  'foo/bar#branch:^1.0.0': { ...defaults, default: 'shortcut', committish: 'branch:^1.0.0' },
 
   'foo/bar.git': { ...defaults, default: 'shortcut' },
-  'foo/bar.git#branch': { ...defaults, default: 'shortcut', committish: 'branch' },
+  'foo/bar.git#branch:^1.0.0': { ...defaults, default: 'shortcut', committish: 'branch:^1.0.0' },
 
   // shortcuts
   //
   // NOTE auth is accepted but ignored
   'github:foo/bar': { ...defaults, default: 'shortcut' },
-  'github:foo/bar#branch': { ...defaults, default: 'shortcut', committish: 'branch' },
+  'github:foo/bar#branch:^1.0.0': { ...defaults, default: 'shortcut', committish: 'branch:^1.0.0' },
   'github:user@foo/bar': { ...defaults, default: 'shortcut', auth: null },
-  'github:user@foo/bar#branch': { ...defaults, default: 'shortcut', auth: null, committish: 'branch' },
+  'github:user@foo/bar#branch:^1.0.0': { ...defaults, default: 'shortcut', auth: null, committish: 'branch:^1.0.0' },
   'github:user:password@foo/bar': { ...defaults, default: 'shortcut', auth: null },
-  'github:user:password@foo/bar#branch': { ...defaults, default: 'shortcut', auth: null, committish: 'branch' },
+  'github:user:password@foo/bar#branch:^1.0.0': { ...defaults, default: 'shortcut', auth: null, committish: 'branch:^1.0.0' },
   'github::password@foo/bar': { ...defaults, default: 'shortcut', auth: null },
-  'github::password@foo/bar#branch': { ...defaults, default: 'shortcut', auth: null, committish: 'branch' },
+  'github::password@foo/bar#branch:^1.0.0': { ...defaults, default: 'shortcut', auth: null, committish: 'branch:^1.0.0' },
 
   'github:foo/bar.git': { ...defaults, default: 'shortcut' },
-  'github:foo/bar.git#branch': { ...defaults, default: 'shortcut', committish: 'branch' },
+  'github:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'shortcut', committish: 'branch:^1.0.0' },
   'github:user@foo/bar.git': { ...defaults, default: 'shortcut', auth: null },
-  'github:user@foo/bar.git#branch': { ...defaults, default: 'shortcut', auth: null, committish: 'branch' },
+  'github:user@foo/bar.git#branch:^1.0.0': { ...defaults, default: 'shortcut', auth: null, committish: 'branch:^1.0.0' },
   'github:user:password@foo/bar.git': { ...defaults, default: 'shortcut', auth: null },
-  'github:user:password@foo/bar.git#branch': { ...defaults, default: 'shortcut', auth: null, committish: 'branch' },
+  'github:user:password@foo/bar.git#branch:^1.0.0': { ...defaults, default: 'shortcut', auth: null, committish: 'branch:^1.0.0' },
   'github::password@foo/bar.git': { ...defaults, default: 'shortcut', auth: null },
-  'github::password@foo/bar.git#branch': { ...defaults, default: 'shortcut', auth: null, committish: 'branch' },
+  'github::password@foo/bar.git#branch:^1.0.0': { ...defaults, default: 'shortcut', auth: null, committish: 'branch:^1.0.0' },
 
   // git urls
   //
   // NOTE auth is accepted and respected
   'git://github.com/foo/bar': { ...defaults, default: 'git' },
-  'git://github.com/foo/bar#branch': { ...defaults, default: 'git', committish: 'branch' },
+  'git://github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'git', committish: 'branch:^1.0.0' },
   'git://user@github.com/foo/bar': { ...defaults, default: 'git', auth: 'user' },
-  'git://user@github.com/foo/bar#branch': { ...defaults, default: 'git', auth: 'user', committish: 'branch' },
+  'git://user@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'git', auth: 'user', committish: 'branch:^1.0.0' },
   'git://user:password@github.com/foo/bar': { ...defaults, default: 'git', auth: 'user:password' },
-  'git://user:password@github.com/foo/bar#branch': { ...defaults, default: 'git', auth: 'user:password', committish: 'branch' },
+  'git://user:password@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'git', auth: 'user:password', committish: 'branch:^1.0.0' },
   'git://:password@github.com/foo/bar': { ...defaults, default: 'git', auth: ':password' },
-  'git://:password@github.com/foo/bar#branch': { ...defaults, default: 'git', auth: ':password', committish: 'branch' },
+  'git://:password@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'git', auth: ':password', committish: 'branch:^1.0.0' },
 
   'git://github.com/foo/bar.git': { ...defaults, default: 'git' },
-  'git://github.com/foo/bar.git#branch': { ...defaults, default: 'git', committish: 'branch' },
+  'git://github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'git', committish: 'branch:^1.0.0' },
   'git://git@github.com/foo/bar.git': { ...defaults, default: 'git', auth: 'git' },
-  'git://git@github.com/foo/bar.git#branch': { ...defaults, default: 'git', auth: 'git', committish: 'branch' },
+  'git://git@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'git', auth: 'git', committish: 'branch:^1.0.0' },
   'git://user:password@github.com/foo/bar.git': { ...defaults, default: 'git', auth: 'user:password' },
-  'git://user:password@github.com/foo/bar.git#branch': { ...defaults, default: 'git', auth: 'user:password', committish: 'branch' },
+  'git://user:password@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'git', auth: 'user:password', committish: 'branch:^1.0.0' },
   'git://:password@github.com/foo/bar.git': { ...defaults, default: 'git', auth: ':password' },
-  'git://:password@github.com/foo/bar.git#branch': { ...defaults, default: 'git', auth: ':password', committish: 'branch' },
+  'git://:password@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'git', auth: ':password', committish: 'branch:^1.0.0' },
 
   // no-protocol git+ssh
   //
   // NOTE auth is _required_ (see invalid list) but ignored
   'user@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  'user@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'user@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'user:password@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  'user:password@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'user:password@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   ':password@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  ':password@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  ':password@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
 
   'user@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  'user@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'user@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'user:password@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  'user:password@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'user:password@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   ':password@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  ':password@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  ':password@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
 
   // git+ssh urls
   //
   // NOTE auth is accepted but ignored
   'git+ssh://github.com:foo/bar': { ...defaults, default: 'sshurl' },
-  'git+ssh://github.com:foo/bar#branch': { ...defaults, default: 'sshurl', committish: 'branch' },
+  'git+ssh://github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', committish: 'branch:^1.0.0' },
   'git+ssh://user@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  'git+ssh://user@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'git+ssh://user@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'git+ssh://user:password@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  'git+ssh://user:password@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'git+ssh://user:password@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'git+ssh://:password@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  'git+ssh://:password@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'git+ssh://:password@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
 
   'git+ssh://github.com:foo/bar.git': { ...defaults, default: 'sshurl' },
-  'git+ssh://github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', committish: 'branch' },
+  'git+ssh://github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', committish: 'branch:^1.0.0' },
   'git+ssh://user@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  'git+ssh://user@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'git+ssh://user@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'git+ssh://user:password@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  'git+ssh://user:password@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'git+ssh://user:password@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'git+ssh://:password@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  'git+ssh://:password@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'git+ssh://:password@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
 
   // ssh urls
   //
   // NOTE auth is accepted but ignored
   'ssh://github.com:foo/bar': { ...defaults, default: 'sshurl' },
-  'ssh://github.com:foo/bar#branch': { ...defaults, default: 'sshurl', committish: 'branch' },
+  'ssh://github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', committish: 'branch:^1.0.0' },
   'ssh://user@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  'ssh://user@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'ssh://user@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'ssh://user:password@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  'ssh://user:password@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'ssh://user:password@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'ssh://:password@github.com:foo/bar': { ...defaults, default: 'sshurl', auth: null },
-  'ssh://:password@github.com:foo/bar#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'ssh://:password@github.com:foo/bar#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
 
   'ssh://github.com:foo/bar.git': { ...defaults, default: 'sshurl' },
-  'ssh://github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', committish: 'branch' },
+  'ssh://github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', committish: 'branch:^1.0.0' },
   'ssh://user@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  'ssh://user@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'ssh://user@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'ssh://user:password@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  'ssh://user:password@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'ssh://user:password@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
   'ssh://:password@github.com:foo/bar.git': { ...defaults, default: 'sshurl', auth: null },
-  'ssh://:password@github.com:foo/bar.git#branch': { ...defaults, default: 'sshurl', auth: null, committish: 'branch' },
+  'ssh://:password@github.com:foo/bar.git#branch:^1.0.0': { ...defaults, default: 'sshurl', auth: null, committish: 'branch:^1.0.0' },
 
   // git+https urls
   //
   // NOTE auth is accepted and respected
   'git+https://github.com/foo/bar': { ...defaults, default: 'https' },
-  'git+https://github.com/foo/bar#branch': { ...defaults, default: 'https', committish: 'branch' },
+  'git+https://github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'https', committish: 'branch:^1.0.0' },
   'git+https://user@github.com/foo/bar': { ...defaults, default: 'https', auth: 'user' },
-  'git+https://user@github.com/foo/bar#branch': { ...defaults, default: 'https', auth: 'user', committish: 'branch' },
+  'git+https://user@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'https', auth: 'user', committish: 'branch:^1.0.0' },
   'git+https://user:password@github.com/foo/bar': { ...defaults, default: 'https', auth: 'user:password' },
-  'git+https://user:password@github.com/foo/bar#branch': { ...defaults, default: 'https', auth: 'user:password', committish: 'branch' },
+  'git+https://user:password@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'https', auth: 'user:password', committish: 'branch:^1.0.0' },
   'git+https://:password@github.com/foo/bar': { ...defaults, default: 'https', auth: ':password' },
-  'git+https://:password@github.com/foo/bar#branch': { ...defaults, default: 'https', auth: ':password', committish: 'branch' },
+  'git+https://:password@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'https', auth: ':password', committish: 'branch:^1.0.0' },
 
   'git+https://github.com/foo/bar.git': { ...defaults, default: 'https' },
-  'git+https://github.com/foo/bar.git#branch': { ...defaults, default: 'https', committish: 'branch' },
+  'git+https://github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'https', committish: 'branch:^1.0.0' },
   'git+https://user@github.com/foo/bar.git': { ...defaults, default: 'https', auth: 'user' },
-  'git+https://user@github.com/foo/bar.git#branch': { ...defaults, default: 'https', auth: 'user', committish: 'branch' },
+  'git+https://user@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'https', auth: 'user', committish: 'branch:^1.0.0' },
   'git+https://user:password@github.com/foo/bar.git': { ...defaults, default: 'https', auth: 'user:password' },
-  'git+https://user:password@github.com/foo/bar.git#branch': { ...defaults, default: 'https', auth: 'user:password', committish: 'branch' },
+  'git+https://user:password@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'https', auth: 'user:password', committish: 'branch:^1.0.0' },
   'git+https://:password@github.com/foo/bar.git': { ...defaults, default: 'https', auth: ':password' },
-  'git+https://:password@github.com/foo/bar.git#branch': { ...defaults, default: 'https', auth: ':password', committish: 'branch' },
+  'git+https://:password@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'https', auth: ':password', committish: 'branch:^1.0.0' },
 
   // https urls
   //
   // NOTE auth is accepted and respected
   'https://github.com/foo/bar': { ...defaults, default: 'https' },
-  'https://github.com/foo/bar#branch': { ...defaults, default: 'https', committish: 'branch' },
+  'https://github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'https', committish: 'branch:^1.0.0' },
   'https://user@github.com/foo/bar': { ...defaults, default: 'https', auth: 'user' },
-  'https://user@github.com/foo/bar#branch': { ...defaults, default: 'https', auth: 'user', committish: 'branch' },
+  'https://user@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'https', auth: 'user', committish: 'branch:^1.0.0' },
   'https://user:password@github.com/foo/bar': { ...defaults, default: 'https', auth: 'user:password' },
-  'https://user:password@github.com/foo/bar#branch': { ...defaults, default: 'https', auth: 'user:password', committish: 'branch' },
+  'https://user:password@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'https', auth: 'user:password', committish: 'branch:^1.0.0' },
   'https://:password@github.com/foo/bar': { ...defaults, default: 'https', auth: ':password' },
-  'https://:password@github.com/foo/bar#branch': { ...defaults, default: 'https', auth: ':password', committish: 'branch' },
+  'https://:password@github.com/foo/bar#branch:^1.0.0': { ...defaults, default: 'https', auth: ':password', committish: 'branch:^1.0.0' },
 
   'https://github.com/foo/bar.git': { ...defaults, default: 'https' },
-  'https://github.com/foo/bar.git#branch': { ...defaults, default: 'https', committish: 'branch' },
+  'https://github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'https', committish: 'branch:^1.0.0' },
   'https://user@github.com/foo/bar.git': { ...defaults, default: 'https', auth: 'user' },
-  'https://user@github.com/foo/bar.git#branch': { ...defaults, default: 'https', auth: 'user', committish: 'branch' },
+  'https://user@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'https', auth: 'user', committish: 'branch:^1.0.0' },
   'https://user:password@github.com/foo/bar.git': { ...defaults, default: 'https', auth: 'user:password' },
-  'https://user:password@github.com/foo/bar.git#branch': { ...defaults, default: 'https', auth: 'user:password', committish: 'branch' },
+  'https://user:password@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'https', auth: 'user:password', committish: 'branch:^1.0.0' },
   'https://:password@github.com/foo/bar.git': { ...defaults, default: 'https', auth: ':password' },
-  'https://:password@github.com/foo/bar.git#branch': { ...defaults, default: 'https', auth: ':password', committish: 'branch' },
+  'https://:password@github.com/foo/bar.git#branch:^1.0.0': { ...defaults, default: 'https', auth: ':password', committish: 'branch:^1.0.0' },
 
   // inputs that are not quite proper but we accept anyway
   'https://www.github.com/foo/bar': { ...defaults, default: 'https' },
   'foo/bar#branch with space': { ...defaults, default: 'shortcut', committish: 'branch with space' },
+  'foo/bar#branch:with:colons': { ...defaults, default: 'shortcut', committish: 'branch:with:colons' },
   'https://github.com/foo/bar/tree/branch': { ...defaults, default: 'https', committish: 'branch' },
   'user..blerg--/..foo-js# . . . . . some . tags / / /': { ...defaults, default: 'shortcut', user: 'user..blerg--', project: '..foo-js', committish: ' . . . . . some . tags / / /' },
 }