$ git clone -n https://src.fedoraproject.org/rpms/gconfmm26.git /var/lib/mock/f45-build-9652-407/root/chroot_tmpdir/scmroot/gconfmm26
Cloning into '/var/lib/mock/f45-build-9652-407/root/chroot_tmpdir/scmroot/gconfmm26'...
$ git fetch origin eeb8dc2cc23e6af2fd37c2f880c74e6c04037575:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gconfmm26
 * [new ref]         eeb8dc2cc23e6af2fd37c2f880c74e6c04037575 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eeb8dc2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild