Tag / commit indexing for annotated tags does not terminate the git process cleanly

Issue Summary

Tag / commit indexing running on a repository that contains annotated tags does not terminate the git process cleanly, and the process is only closed when the command times out.

Steps to Reproduce

Standard tag / commit indexing running on a repository that contains annotated tags

Expected Results

The git process (git cat-file --batch) should terminate cleanly.

Actual Results

The git process (git cat-file --batch) does not terminate cleanly, and is only closed when the command times out (up to 60 seconds later, by default).
Until the process times out it can be seen by running a command such as "ps -ef | grep git" on the server node:

1283 44503 44191   0  1:57pm ??         0:00.00 /usr/local/bin/git cat-file --batch

At DEBUG levels the below message will appear in the application log file:

2021-01-06 13:42:43,233 DEBUG [nio-pump:thread-8]  c.a.b.i.p.nu.NioNuProcessHandler [/usr/local/bin/git cat-file --batch]: Dropping callback invocation (Canceled: false; Timed out: true)

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available