$ git clone -n https://src.fedoraproject.org/rpms/recorder.git /var/lib/mock/f45-build-34401-686/root/chroot_tmpdir/scmroot/recorder
Cloning into '/var/lib/mock/f45-build-34401-686/root/chroot_tmpdir/scmroot/recorder'...
$ git fetch origin cb869a850e97535914f53e2e7040a1cd95e0b37d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/recorder
 * [new ref]         cb869a850e97535914f53e2e7040a1cd95e0b37d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb869a8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild