$ git clone -n https://src.fedoraproject.org/rpms/java-11-openjdk-portable.git /var/lib/mock/f38-build-side-42-init-devel-1374696-30706/root/chroot_tmpdir/scmroot/java-11-openjdk-portable
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1374696-30706/root/chroot_tmpdir/scmroot/java-11-openjdk-portable'...
$ git fetch origin 05887f12bd627b0c996889a57b9c57d8fb9ee6e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-11-openjdk-portable
 * [new ref]         05887f12bd627b0c996889a57b9c57d8fb9ee6e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05887f1 Update to jdk-11.0.20.0+8