$ git clone -n https://src.fedoraproject.org/rpms/rust-servo-fontconfig-sys.git /var/lib/mock/f38-build-side-43-rust-devel-1413546-31444/root/chroot_tmpdir/scmroot/rust-servo-fontconfig-sys
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1413546-31444/root/chroot_tmpdir/scmroot/rust-servo-fontconfig-sys'...
$ git fetch origin c7c00c0172862e7af8825baa119bec2baec16e8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-servo-fontconfig-sys
 * [new ref]         c7c00c0172862e7af8825baa119bec2baec16e8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7c00c0 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild