$ git clone -n https://src.fedoraproject.org/rpms/gcr3.git /var/lib/mock/f40-build-2066095-49280/root/chroot_tmpdir/scmroot/gcr3
Cloning into '/var/lib/mock/f40-build-2066095-49280/root/chroot_tmpdir/scmroot/gcr3'...
$ git fetch origin 923fa0dfd8ec85882babd24e1018111e9bf3b456:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gcr3
 * [new ref]         923fa0dfd8ec85882babd24e1018111e9bf3b456 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 923fa0d clarify license - add GCR-docs