$ git clone -n https://src.fedoraproject.org/rpms/ugrep.git /var/lib/mock/f45-build-37628-716/root/chroot_tmpdir/scmroot/ugrep
Cloning into '/var/lib/mock/f45-build-37628-716/root/chroot_tmpdir/scmroot/ugrep'...
$ git fetch origin ccdd4f9048b45a8599881717a7e30c592715faf0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ugrep
 * [new ref]         ccdd4f9048b45a8599881717a7e30c592715faf0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ccdd4f9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild