$ git clone -n https://src.fedoraproject.org/rpms/qdirstat.git /var/lib/mock/f45-build-33907-674/root/chroot_tmpdir/scmroot/qdirstat
Cloning into '/var/lib/mock/f45-build-33907-674/root/chroot_tmpdir/scmroot/qdirstat'...
$ git fetch origin 9a0c01878d81d53fccbca44eae29bc2baed71d60:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qdirstat
 * [new ref]         9a0c01878d81d53fccbca44eae29bc2baed71d60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a0c018 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild