$ git clone -n https://src.fedoraproject.org/rpms/rust-prost-types.git /var/lib/mock/f39-build-2272644-54930/root/chroot_tmpdir/scmroot/rust-prost-types
Cloning into '/var/lib/mock/f39-build-2272644-54930/root/chroot_tmpdir/scmroot/rust-prost-types'...
$ git fetch origin b125c9272c2ee71cd25dce9200b6ae5ce2ee1d13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-prost-types
 * [new ref]         b125c9272c2ee71cd25dce9200b6ae5ce2ee1d13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b125c92 Update to 0.12.3