$ git clone -n https://src.fedoraproject.org/rpms/helix.git /var/lib/mock/f41-build-1219549-22737/root/chroot_tmpdir/scmroot/helix
Cloning into '/var/lib/mock/f41-build-1219549-22737/root/chroot_tmpdir/scmroot/helix'...
$ git fetch origin 3b18e07470ee77cb7671818c0dcd7db6ee988aee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/helix
 * [new ref]         3b18e07470ee77cb7671818c0dcd7db6ee988aee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b18e07 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces