Merge "Add --unused parameter to whichgit" into main am: e0c74fbd am: f8492aad

Original change: https://android-review.googlesource.com/c/platform/build/+/3056687



Change-Id: I522a86e82d909b023ab7b4d5ae05e7bf9172e270
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>