$ git clone -n https://src.fedoraproject.org/rpms/sdl12-compat.git /var/lib/mock/f40-build-2041342-48426/root/chroot_tmpdir/scmroot/sdl12-compat
Cloning into '/var/lib/mock/f40-build-2041342-48426/root/chroot_tmpdir/scmroot/sdl12-compat'...
$ git fetch origin ff8e28135b3955bec76302e0d50b364a3a497726:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sdl12-compat
 * [new ref]         ff8e28135b3955bec76302e0d50b364a3a497726 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff8e281 Update to 1.2.68