$ git clone -n https://src.fedoraproject.org/rpms/x2goclient.git /var/lib/mock/f39-build-2526759-61806/root/chroot_tmpdir/scmroot/x2goclient
Cloning into '/var/lib/mock/f39-build-2526759-61806/root/chroot_tmpdir/scmroot/x2goclient'...
$ git fetch origin 088f2d6a86845a19508838a835bc6f1000beb63f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/x2goclient
 * [new ref]         088f2d6a86845a19508838a835bc6f1000beb63f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 088f2d6 Add AppStream metadata