Question

I have 57 local branches. I know I made a change to a certain file in one of them, but I’m not sure which one. Is there some kind of command I can run to find which branches contain changes to a certain file?

Answer 1

Find all branches which contain a change to FILENAME (even if before the (non-recorded) branch point)

FILENAME="<filename>"
git log --all --format=%H $FILENAME | while read f; do git branch --contains $f; done | sort -u

Manually inspect:

gitk --all --date-order -- $FILENAME

Find all changes to FILENAME not merged to master:

git for-each-ref --format="%(refname:short)" refs/heads | grep -v master | while read br; do git cherry master $br | while read x h; do if [ "`git log -n 1 --format=%H $h -- $FILENAME`" = "$h" ]; then echo $br; fi; done; done | sort -u