$ git clone -n https://src.fedoraproject.org/rpms/golang-contrib-opencensus-exporter-prometheus.git /var/lib/mock/f38-build-side-42-init-devel-663119-26639/root/chroot_tmpdir/scmroot/golang-contrib-opencensus-exporter-prometheus
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-663119-26639/root/chroot_tmpdir/scmroot/golang-contrib-opencensus-exporter-prometheus'...
$ git fetch origin ae71aad5d4bb9ec9772862783185cd236b48cc3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-contrib-opencensus-exporter-prometheus
 * [new ref]         ae71aad5d4bb9ec9772862783185cd236b48cc3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae71aad Added the README