$ git clone -n https://src.fedoraproject.org/rpms/zenity.git /var/lib/mock/f45-build-39330-733/root/chroot_tmpdir/scmroot/zenity
Cloning into '/var/lib/mock/f45-build-39330-733/root/chroot_tmpdir/scmroot/zenity'...
$ git fetch origin 13bc59d292489041d982e9c9bba8152ca0e30959:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zenity
 * [new ref]         13bc59d292489041d982e9c9bba8152ca0e30959 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13bc59d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild