$ git clone -n https://src.fedoraproject.org/rpms/gobject-introspection.git /var/lib/mock/f40-build-2689096-68106/root/chroot_tmpdir/scmroot/gobject-introspection
Cloning into '/var/lib/mock/f40-build-2689096-68106/root/chroot_tmpdir/scmroot/gobject-introspection'...
$ git fetch origin 3451242358f2b25f287ac0d7dbf8eb39b73e2690:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gobject-introspection
 * [new ref]         3451242358f2b25f287ac0d7dbf8eb39b73e2690 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3451242 Update to 1.80.1