$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_csplit.git /var/lib/mock/f40-build-774037-127569/root/chroot_tmpdir/scmroot/rust-uu_csplit
Cloning into '/var/lib/mock/f40-build-774037-127569/root/chroot_tmpdir/scmroot/rust-uu_csplit'...
$ git fetch origin 6c9c8e25bd4120d6e32366c04ec8c33fa6c207cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_csplit
 * [new ref]         6c9c8e25bd4120d6e32366c04ec8c33fa6c207cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c9c8e2 Initial package (rhbz#2257471)