$ git clone -n https://src.fedoraproject.org/rpms/jakarta-annotations.git /var/lib/mock/f40-build-2494587-61664/root/chroot_tmpdir/scmroot/jakarta-annotations
Cloning into '/var/lib/mock/f40-build-2494587-61664/root/chroot_tmpdir/scmroot/jakarta-annotations'...
$ git fetch origin ec13b95eb94ee1325be8bf7cc48eb50da6969a07:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jakarta-annotations
 * [new ref]         ec13b95eb94ee1325be8bf7cc48eb50da6969a07 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ec13b95 Rebuilt for java-21-openjdk as system jdk