$ git clone -n https://src.fedoraproject.org/rpms/rust-scx_rustland.git /var/lib/mock/f40-build-1967896-25215/root/chroot_tmpdir/scmroot/rust-scx_rustland
Cloning into '/var/lib/mock/f40-build-1967896-25215/root/chroot_tmpdir/scmroot/rust-scx_rustland'...
$ git fetch origin 24f0691be0eac7c4d883afc11b0edcec8f033a06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-scx_rustland
 * [new ref]         24f0691be0eac7c4d883afc11b0edcec8f033a06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 24f0691 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces