$ git clone -n https://src.fedoraproject.org/rpms/sipp.git /var/lib/mock/f41-build-851133-165857/root/chroot_tmpdir/scmroot/sipp
Cloning into '/var/lib/mock/f41-build-851133-165857/root/chroot_tmpdir/scmroot/sipp'...
$ git fetch origin ce7e7c3ec15e6304a3728393bd341e1e52a8e3b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sipp
 * [new ref]         ce7e7c3ec15e6304a3728393bd341e1e52a8e3b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce7e7c3 SIPp ver. 3.7.3