$ git clone -n https://src.fedoraproject.org/rpms/jello.git /var/lib/mock/f45-build-14346-459/root/chroot_tmpdir/scmroot/jello
Cloning into '/var/lib/mock/f45-build-14346-459/root/chroot_tmpdir/scmroot/jello'...
$ git fetch origin b50c0990cc18428940e20b75e8c17e3f69b66361:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jello
 * [new ref]         b50c0990cc18428940e20b75e8c17e3f69b66361 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b50c099 Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild