$ git clone -n https://src.fedoraproject.org/rpms/rust-zram-generator.git /var/lib/mock/f38-build-side-43-rust-devel-1412460-31443/root/chroot_tmpdir/scmroot/rust-zram-generator
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1412460-31443/root/chroot_tmpdir/scmroot/rust-zram-generator'...
$ git fetch origin b94403eac9c421a458dfe8765acf7171daf00598:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zram-generator
 * [new ref]         b94403eac9c421a458dfe8765acf7171daf00598 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b94403e Add missing newline in config file