$ git clone -n https://src.fedoraproject.org/rpms/gssntlmssp.git /var/lib/mock/f45-build-13087-446/root/chroot_tmpdir/scmroot/gssntlmssp
Cloning into '/var/lib/mock/f45-build-13087-446/root/chroot_tmpdir/scmroot/gssntlmssp'...
$ git fetch origin b1e52aeb112cf1496e0542de4f3272639c112263:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gssntlmssp
 * [new ref]         b1e52aeb112cf1496e0542de4f3272639c112263 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1e52ae Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild