$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_tsort.git /var/lib/mock/f41-build-810894-146981/root/chroot_tmpdir/scmroot/rust-uu_tsort
Cloning into '/var/lib/mock/f41-build-810894-146981/root/chroot_tmpdir/scmroot/rust-uu_tsort'...
$ git fetch origin c3bbbc722e79dcbafa3beccc4257809ac32f4d6b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_tsort
 * [new ref]         c3bbbc722e79dcbafa3beccc4257809ac32f4d6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3bbbc7 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces