$ git clone -n https://src.fedoraproject.org/rpms/rust-zlib-rs.git /var/lib/mock/f42-build-3252957-41225/root/chroot_tmpdir/scmroot/rust-zlib-rs
Cloning into '/var/lib/mock/f42-build-3252957-41225/root/chroot_tmpdir/scmroot/rust-zlib-rs'...
$ git fetch origin 1116fb1eb1192b86a8dbd9009fcd6684417d7909:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zlib-rs
 * [new ref]         1116fb1eb1192b86a8dbd9009fcd6684417d7909 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1116fb1 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild