$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-hash.git /var/lib/mock/f39-build-1543477-36563/root/chroot_tmpdir/scmroot/rust-gix-hash
Cloning into '/var/lib/mock/f39-build-1543477-36563/root/chroot_tmpdir/scmroot/rust-gix-hash'...
$ git fetch origin bde77908faa90ef8bd4ab844412240bc51550dcf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-hash
 * [new ref]         bde77908faa90ef8bd4ab844412240bc51550dcf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bde7790 Update to version 0.13.1