$ git clone -n https://src.fedoraproject.org/rpms/babel.git /var/lib/mock/f41-build-side-1-2749717-31005/root/chroot_tmpdir/scmroot/babel
Cloning into '/var/lib/mock/f41-build-side-1-2749717-31005/root/chroot_tmpdir/scmroot/babel'...
$ git fetch origin ffa8ed04dc7f7c696af430d51daf7e6a35407190:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/babel
 * [new ref]         ffa8ed04dc7f7c696af430d51daf7e6a35407190 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffa8ed0 Update to 2.16.0