$ git clone -n https://src.fedoraproject.org/rpms/golang-github-pkg-errors.git /var/lib/mock/f37-build-side-33-golang-devel-83385-4460/root/chroot_tmpdir/scmroot/golang-github-pkg-errors
Cloning into '/var/lib/mock/f37-build-side-33-golang-devel-83385-4460/root/chroot_tmpdir/scmroot/golang-github-pkg-errors'...
$ git reset --hard c3af68b06afe33b0dc20bee4686883a42f5ce7df
HEAD is now at c3af68b SPEC cleanup