$ git clone -n https://src.fedoraproject.org/rpms/rust-just.git /var/lib/mock/f41-build-side-1-2758846-31561/root/chroot_tmpdir/scmroot/rust-just
Cloning into '/var/lib/mock/f41-build-side-1-2758846-31561/root/chroot_tmpdir/scmroot/rust-just'...
$ git fetch origin 9f662754b0fdb6ff2ff09fa034e87352fd4d615a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-just
 * [new ref]         9f662754b0fdb6ff2ff09fa034e87352fd4d615a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f66275 Update to 1.35.0 (#2308841)