$ git clone -n https://src.fedoraproject.org/rpms/java-21-openjdk.git /var/lib/mock/f41-build-side-1-2834455-33684/root/chroot_tmpdir/scmroot/java-21-openjdk
Cloning into '/var/lib/mock/f41-build-side-1-2834455-33684/root/chroot_tmpdir/scmroot/java-21-openjdk'...
$ git fetch origin be49c1ccd64bc2265e7613a5a9e87495a792fcd6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-21-openjdk
 * [new ref]         be49c1ccd64bc2265e7613a5a9e87495a792fcd6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be49c1c July CPU