pip install requirements.txt breaks with unresolved branch error

[bikash119]

Preconditions :
conda : 4.10.1
python: 3.9.5

Using pip install inside conda virtual env.

Collecting git+https://github.com/jina-ai/jina-commons (from -r requirements.txt (line 3))
Cloning https://github.com/jina-ai/jina-commons to /private/var/folders/l3/76jk8xks4wv0yrh5rq2kqysr0000gn/T/pip-req-build-pbazl0bs
Running command git clone -q https://github.com/jina-ai/jina-commons /private/var/folders/l3/76jk8xks4wv0yrh5rq2kqysr0000gn/T/pip-req-build-pbazl0bs
Collecting git+https://github.com/jina-ai/executor-indexers.git@feat-memmapindexer (from -r requirements.txt (line 4))
Cloning https://github.com/jina-ai/executor-indexers.git (to revision feat-memmapindexer) to /private/var/folders/l3/76jk8xks4wv0yrh5rq2kqysr0000gn/T/pip-req-build-_nls_oml
Running command git clone -q https://github.com/jina-ai/executor-indexers.git /private/var/folders/l3/76jk8xks4wv0yrh5rq2kqysr0000gn/T/pip-req-build-_nls_oml
WARNING: Did not find branch or tag 'feat-memmapindexer', assuming revision or ref.
Running command git checkout -q feat-memmapindexer
error: pathspec 'feat-memmapindexer' did not match any file(s) known to git
WARNING: Discarding git+https://github.com/jina-ai/executor-indexers.git@feat-memmapindexer. Command errored out with exit status 1: git checkout -q feat-memmapindexer Check the logs for full command output.
ERROR: Command errored out with exit status 1: git checkout -q feat-memmapindexer Check the logs for full command output.

Verified, the referred branch doesn't exist for executor-indexer repo.