$ git clone -n https://src.fedoraproject.org/rpms/cglib.git /var/lib/mock/f40-build-2065610-49266/root/chroot_tmpdir/scmroot/cglib
Cloning into '/var/lib/mock/f40-build-2065610-49266/root/chroot_tmpdir/scmroot/cglib'...
$ git fetch origin ac4c4da85e499663c7b9b4459606a713ddffda53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cglib
 * [new ref]         ac4c4da85e499663c7b9b4459606a713ddffda53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac4c4da Update javapackages test plan to f40