Is it possible to show if git branches have the same commits if the one of the branches has been rebased so they don't have the same SHA1 IDs? -

i'm trying same effect of running git branch --merged allow same commits (commit message + diff) have been rebased @ point.

using git log --cherry-mark option work. specifically, can see set of commits same between branch a , branch b following:

git log --cherry-mark --oneline --graph --decorate a...b 

example output:

$ git log --cherry-mark --oneline --graph --decorate master...feature = 1e4f971 (head, feature) add greetings = 926857a add greetings = bfede5b add greetings = 14099b6 (master) add hellos = a0576fa add hellos = 8822553 add hellos 

in above output, see first 3 commits in output feature equivalent first 3 commits in output master, though sha ids , commit messages different.

from official linux kernel git documentation git log:

--cherry-mark 

like --cherry-pick (see below) mark equivalent commits = rather omitting them, , inequivalent ones +.

--cherry-pick 

omit commit introduces same change commit on "other side" when set of commits limited symmetric difference.

for example, if have 2 branches, , b, usual way list commits on 1 side of them --left-right (see example below in description of --left-right option). shows commits cherry-picked other branch (for example, "3rd on b" may cherry-picked branch a). option, such pairs of commits excluded output.

you can learn more triple dot ... commit range syntax @ revision selection chapter of free online pro git book.