$ git clone -n https://src.fedoraproject.org/rpms/scim.git /var/lib/mock/f45-build-35672-698/root/chroot_tmpdir/scmroot/scim
Cloning into '/var/lib/mock/f45-build-35672-698/root/chroot_tmpdir/scmroot/scim'...
$ git fetch origin 7700628a07755e5f3dccd267772ec81d361c37e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scim
 * [new ref]         7700628a07755e5f3dccd267772ec81d361c37e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7700628 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild