$ git clone -n https://src.fedoraproject.org/rpms/rust-sd.git /var/lib/mock/f41-build-810685-146889/root/chroot_tmpdir/scmroot/rust-sd
Cloning into '/var/lib/mock/f41-build-810685-146889/root/chroot_tmpdir/scmroot/rust-sd'...
$ git fetch origin 580517fe59182862369d1a5c69678a1ee18deee7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sd
 * [new ref]         580517fe59182862369d1a5c69678a1ee18deee7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 580517f Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces