$ git clone -n https://src.fedoraproject.org/rpms/rust-zram-generator.git /var/lib/mock/f41-build-810607-146819/root/chroot_tmpdir/scmroot/rust-zram-generator
Cloning into '/var/lib/mock/f41-build-810607-146819/root/chroot_tmpdir/scmroot/rust-zram-generator'...
$ git fetch origin 484d81432e9e2b97f6b168a9bf5199803baee2ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zram-generator
 * [new ref]         484d81432e9e2b97f6b168a9bf5199803baee2ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 484d814 Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces