$ git clone -n https://src.fedoraproject.org/rpms/grhino.git /var/lib/mock/f45-build-13057-446/root/chroot_tmpdir/scmroot/grhino
Cloning into '/var/lib/mock/f45-build-13057-446/root/chroot_tmpdir/scmroot/grhino'...
$ git fetch origin 5acf72c0a9cc32cf233a296d4409ba6b10f37eef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/grhino
 * [new ref]         5acf72c0a9cc32cf233a296d4409ba6b10f37eef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5acf72c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild