$ git clone -n https://src.fedoraproject.org/rpms/libfm-qt.git /var/lib/mock/f45-build-16173-483/root/chroot_tmpdir/scmroot/libfm-qt
Cloning into '/var/lib/mock/f45-build-16173-483/root/chroot_tmpdir/scmroot/libfm-qt'...
$ git fetch origin 779e02f8cb450c345c2afc0b3b03aaf341e9938c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libfm-qt
 * [new ref]         779e02f8cb450c345c2afc0b3b03aaf341e9938c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 779e02f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild