$ git clone -n https://src.fedoraproject.org/rpms/golang-github-jcmturner-goidentity-6.git /var/lib/mock/f38-build-side-42-init-devel-1082238-29833/root/chroot_tmpdir/scmroot/golang-github-jcmturner-goidentity-6
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1082238-29833/root/chroot_tmpdir/scmroot/golang-github-jcmturner-goidentity-6'...
$ git fetch origin 6b700e9dde6e744b62b488e753c79ec66d83575c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-jcmturner-goidentity-6
 * [new ref]         6b700e9dde6e744b62b488e753c79ec66d83575c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b700e9 Added the README