$ git clone -n https://src.fedoraproject.org/rpms/java-11-openjdk-portable.git /var/lib/mock/f40-build-2356967-60307/root/chroot_tmpdir/scmroot/java-11-openjdk-portable
Cloning into '/var/lib/mock/f40-build-2356967-60307/root/chroot_tmpdir/scmroot/java-11-openjdk-portable'...
$ git fetch origin b7a0d7bd5ac30e332500c2d7e4ef651209f81151:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/java-11-openjdk-portable
 * [new ref]         b7a0d7bd5ac30e332500c2d7e4ef651209f81151 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b7a0d7b Update to jdk-11.0.22+7 (GA)