$ git clone -n https://src.fedoraproject.org/rpms/jakarta-annotations.git /var/lib/mock/f40-build-2241237-53661/root/chroot_tmpdir/scmroot/jakarta-annotations
Cloning into '/var/lib/mock/f40-build-2241237-53661/root/chroot_tmpdir/scmroot/jakarta-annotations'...
$ git fetch origin 40eabbe35715d399687ac6feacbfd781422684dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jakarta-annotations
 * [new ref]         40eabbe35715d399687ac6feacbfd781422684dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40eabbe Update javapackages test plan to f40