$ git clone -n https://src.fedoraproject.org/rpms/golang-github-docker-slim.git /var/lib/mock/f38-build-729801-101874/root/chroot_tmpdir/scmroot/golang-github-docker-slim
Cloning into '/var/lib/mock/f38-build-729801-101874/root/chroot_tmpdir/scmroot/golang-github-docker-slim'...
$ git fetch origin be278a154a6fdfb7073ccf02b7106ad6c3caa2bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-docker-slim
 * [new ref]         be278a154a6fdfb7073ccf02b7106ad6c3caa2bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be278a1 Fix arches