$ git clone -n https://src.fedoraproject.org/rpms/opencsg.git /var/lib/mock/f45-build-21020-577/root/chroot_tmpdir/scmroot/opencsg
Cloning into '/var/lib/mock/f45-build-21020-577/root/chroot_tmpdir/scmroot/opencsg'...
$ git fetch origin 7d73caeee201e04ab1b515bf86a74f555a834231:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opencsg
 * [new ref]         7d73caeee201e04ab1b515bf86a74f555a834231 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d73cae Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild