$ git clone -n https://src.fedoraproject.org/rpms/python-grafeas.git /var/lib/mock/f38-build-side-42-init-devel-984510-29064/root/chroot_tmpdir/scmroot/python-grafeas
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-984510-29064/root/chroot_tmpdir/scmroot/python-grafeas'...
$ git fetch origin ec8d76242f2977ae89b04fb1be4dd9ae4ad2f22f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-grafeas
 * [new ref]         ec8d76242f2977ae89b04fb1be4dd9ae4ad2f22f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec8d762 Update to 1.8.1