$ git clone -n https://src.fedoraproject.org/rpms/rust-arraydeque.git /var/lib/mock/f41-build-58991383-6569515/root/chroot_tmpdir/scmroot/rust-arraydeque
Cloning into '/var/lib/mock/f41-build-58991383-6569515/root/chroot_tmpdir/scmroot/rust-arraydeque'...
$ git fetch origin 5fae13508a1096823059f7b7f76c9c6d35f5bdbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-arraydeque
 * [new ref]         5fae13508a1096823059f7b7f76c9c6d35f5bdbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5fae135 Import rhbz#2358961