$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jcmturner-gokrb5-8.git /var/lib/mock/f38-build-side-42-init-devel-746283-27658/root/chroot_tmpdir/scmroot/golang-github-jcmturner-gokrb5-8
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-746283-27658/root/chroot_tmpdir/scmroot/golang-github-jcmturner-gokrb5-8'...
$ git fetch origin c763a9e5e2b8945b9f8513a5319fffb2c355bf20:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jcmturner-gokrb5-8
 * [new ref]         c763a9e5e2b8945b9f8513a5319fffb2c355bf20 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c763a9e Added the README