$ git clone -n https://src.fedoraproject.org/rpms/java-11-openjdk.git /var/lib/mock/f41-build-750621-13382/root/chroot_tmpdir/scmroot/java-11-openjdk
Cloning into '/var/lib/mock/f41-build-750621-13382/root/chroot_tmpdir/scmroot/java-11-openjdk'...
$ git fetch origin 8f694a1d90b4968ae68b7aa1c89b82b348e5820b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-11-openjdk
 * [new ref]         8f694a1d90b4968ae68b7aa1c89b82b348e5820b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f694a1 repacking april CPU portables