$ git clone -n https://src.fedoraproject.org/rpms/java-gnome.git /var/lib/mock/f38-build-side-42-init-devel-956841-28786/root/chroot_tmpdir/scmroot/java-gnome
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-956841-28786/root/chroot_tmpdir/scmroot/java-gnome'...
$ git fetch origin 23bf183851e09c0d4a0527007c28a6d4496e36fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-gnome
 * [new ref]         23bf183851e09c0d4a0527007c28a6d4496e36fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23bf183 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild