$ git clone -n https://src.fedoraproject.org/rpms/golang-github-facebook-time.git /var/lib/mock/f41-build-side-1-2903895-34705/root/chroot_tmpdir/scmroot/golang-github-facebook-time
Cloning into '/var/lib/mock/f41-build-side-1-2903895-34705/root/chroot_tmpdir/scmroot/golang-github-facebook-time'...
$ git fetch origin c2f2ce7c00a0e727ba8a2a7cadc59c14157a7908:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-facebook-time
 * [new ref]         c2f2ce7c00a0e727ba8a2a7cadc59c14157a7908 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c2f2ce7 Merge #23 `Rebuild latest`