$ git clone -n https://src.fedoraproject.org/rpms/runc.git /var/lib/mock/f42-build-3426611-45197/root/chroot_tmpdir/scmroot/runc
Cloning into '/var/lib/mock/f42-build-3426611-45197/root/chroot_tmpdir/scmroot/runc'...
$ git fetch origin 13f2bd247fa8e4432d56ef921ca4703547615ae5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/runc
 * [new ref]         13f2bd247fa8e4432d56ef921ca4703547615ae5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13f2bd2 Update to 1.2.5 upstream release