$ git clone -n https://src.fedoraproject.org/rpms/python-dbusmock.git /var/lib/mock/f45-build-30249-643/root/chroot_tmpdir/scmroot/python-dbusmock
Cloning into '/var/lib/mock/f45-build-30249-643/root/chroot_tmpdir/scmroot/python-dbusmock'...
$ git fetch origin 0f8421bff64eca0e09a453e07643f98a73afb4f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dbusmock
 * [new ref]         0f8421bff64eca0e09a453e07643f98a73afb4f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f8421b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild