$ git clone -n https://src.fedoraproject.org/rpms/sagator.git /var/lib/mock/f41-build-side-1-2810452-32896/root/chroot_tmpdir/scmroot/sagator
Cloning into '/var/lib/mock/f41-build-side-1-2810452-32896/root/chroot_tmpdir/scmroot/sagator'...
$ git fetch origin c0776455790219fc8a52ae6b7532cbf1203230f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sagator
 * [new ref]         c0776455790219fc8a52ae6b7532cbf1203230f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c077645 Add passlib requires.