$ git clone -n https://src.fedoraproject.org/rpms/rust-add-determinism.git /var/lib/mock/f41-build-861659-169949/root/chroot_tmpdir/scmroot/rust-add-determinism
Cloning into '/var/lib/mock/f41-build-861659-169949/root/chroot_tmpdir/scmroot/rust-add-determinism'...
$ git fetch origin b254f180c3e6915de8ac6d6297b7585a610f3e0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-add-determinism
 * [new ref]         b254f180c3e6915de8ac6d6297b7585a610f3e0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b254f18 Add patch to limit the number of workers