$ git clone -n https://src.fedoraproject.org/rpms/golang-github-distribution-distribution-3.git /var/lib/mock/f38-build-side-42-init-devel-1058215-29765/root/chroot_tmpdir/scmroot/golang-github-distribution-distribution-3
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1058215-29765/root/chroot_tmpdir/scmroot/golang-github-distribution-distribution-3'...
$ git fetch origin 986cdca5a9c01ff80a031d0d355ac594996839b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-distribution-distribution-3
 * [new ref]         986cdca5a9c01ff80a031d0d355ac594996839b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 986cdca Added the README