Inconsistent git describe during rebase --exec

[JacekLach]

It seems that the way gradle-git-version calculates native description makes assumptions that don't always hold. I expected it was just using git describe --tags --first-parent, but that works just fine:

$ git rebase --exec 'git describe --tags' develop
Executing: git describe --tags
2.71.0-30-g4bdd087aa
Executing: git describe --tags
2.71.0-31-g028a32eb8
Executing: git describe --tags
2.71.0-32-g26ccc19be
Executing: git describe --tags
2.71.0-33-g7e8a0d669
Executing: git describe --tags
2.71.0-34-g693f9688d
Executing: git describe --tags
2.71.0-35-g42549d503
Executing: git describe --tags
2.71.0-36-g2e8b418fc
Executing: git describe --tags
2.71.0-37-g2055391f7
Executing: git describe --tags
2.71.0-38-g0363cc265
Executing: git describe --tags
2.71.0-39-g9d79059fe
Executing: git describe --tags
2.71.0-40-g9fdd91a56
Executing: git describe --tags
2.71.0-41-g6957552f4
Successfully rebased and updated refs/heads/jl/foo.
 $ git rebase --exec './gradlew printVersion' develop
Executing: ./gradlew printVersion

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.
-----------
* Where:
Build file '/Volumes/git/foo/build.gradle' line: 47

* What went wrong:
A problem occurred evaluating root project 'foo'.
> Inconsistent git describe: native was 4bdd087 and jgit was 2.71.0-30-g4bdd087. Please report this on github.com/palantir/gradle-git-version

[JacekLach]

Workaround: break git, so that the 'native' git describer fails instaed of producing wrong output:

$ git rebase --exec 'GIT_DIR=/tmp/.git ./gradlew printVersion' develop
(.. happy gradlew output)