$ git clone -n https://src.fedoraproject.org/rpms/golang-github-niklasfasching-org.git /var/lib/mock/f38-build-709994-93181/root/chroot_tmpdir/scmroot/golang-github-niklasfasching-org
Cloning into '/var/lib/mock/f38-build-709994-93181/root/chroot_tmpdir/scmroot/golang-github-niklasfasching-org'...
$ git fetch origin acb2a893c43c7356b1f7ffc2146ce5a3f2f73389:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-niklasfasching-org
 * [new ref]         acb2a893c43c7356b1f7ffc2146ce5a3f2f73389 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acb2a89 Fix compatibility with chroma 2.5