$ git clone -n https://src.fedoraproject.org/rpms/gimp-save-for-web.git /var/lib/mock/f41-build-side-1-3126847-39527/root/chroot_tmpdir/scmroot/gimp-save-for-web
Cloning into '/var/lib/mock/f41-build-side-1-3126847-39527/root/chroot_tmpdir/scmroot/gimp-save-for-web'...
$ git fetch origin 838b42179a477ff5991c243a811dd6c610e8966b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gimp-save-for-web
 * [new ref]         838b42179a477ff5991c243a811dd6c610e8966b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 838b421 Obsolete  replaced by built-in export option in GIMP 3