$ git clone -n https://src.fedoraproject.org/rpms/fdk-aac-free.git /var/lib/mock/f40-build-760959-121325/root/chroot_tmpdir/scmroot/fdk-aac-free
Cloning into '/var/lib/mock/f40-build-760959-121325/root/chroot_tmpdir/scmroot/fdk-aac-free'...
$ git fetch origin 5b6aaa7cb919a5b132d84e90fedaa7be2ac750e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fdk-aac-free
 * [new ref]         5b6aaa7cb919a5b132d84e90fedaa7be2ac750e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b6aaa7 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild