$ git clone -n https://src.fedoraproject.org/rpms/rust-just.git /var/lib/mock/f41-build-709993-13017/root/chroot_tmpdir/scmroot/rust-just
Cloning into '/var/lib/mock/f41-build-709993-13017/root/chroot_tmpdir/scmroot/rust-just'...
$ git fetch origin f79493bf2a65a7977865ca4cb1e26f044699243d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-just
 * [new ref]         f79493bf2a65a7977865ca4cb1e26f044699243d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f79493b Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces