$ git clone -n https://src.fedoraproject.org/rpms/ghc-s-cargot.git /var/lib/mock/f41-build-838896-159867/root/chroot_tmpdir/scmroot/ghc-s-cargot
Cloning into '/var/lib/mock/f41-build-838896-159867/root/chroot_tmpdir/scmroot/ghc-s-cargot'...
$ git fetch origin 930c3744f5fd3841f25721c99b763f89babfa4ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-s-cargot
 * [new ref]         930c3744f5fd3841f25721c99b763f89babfa4ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 930c374 bump release