$ git clone -n https://src.fedoraproject.org/rpms/golang-github-civo-civogo.git /var/lib/mock/f39-build-1586482-38201/root/chroot_tmpdir/scmroot/golang-github-civo-civogo
Cloning into '/var/lib/mock/f39-build-1586482-38201/root/chroot_tmpdir/scmroot/golang-github-civo-civogo'...
$ git fetch origin 91c76af2a24f893c73768380013a5617c5ea25ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-civo-civogo
 * [new ref]         91c76af2a24f893c73768380013a5617c5ea25ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91c76af Initial import