$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_unexpand.git /var/lib/mock/f41-build-810913-146983/root/chroot_tmpdir/scmroot/rust-uu_unexpand
Cloning into '/var/lib/mock/f41-build-810913-146983/root/chroot_tmpdir/scmroot/rust-uu_unexpand'...
$ git fetch origin 1ed906b2ddcd4ef0cd1bc82da5ab0591c6aab854:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_unexpand
 * [new ref]         1ed906b2ddcd4ef0cd1bc82da5ab0591c6aab854 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ed906b Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces