$ git clone -n https://src.fedoraproject.org/rpms/golang-github-lestrrat-httpcc.git /var/lib/mock/f38-build-side-42-init-devel-1085243-29985/root/chroot_tmpdir/scmroot/golang-github-lestrrat-httpcc
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1085243-29985/root/chroot_tmpdir/scmroot/golang-github-lestrrat-httpcc'...
$ git fetch origin 5529ee41178e468a26ebac4301ded85712972e2c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-lestrrat-httpcc
 * [new ref]         5529ee41178e468a26ebac4301ded85712972e2c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5529ee4 Added the README