$ git clone -n https://src.fedoraproject.org/rpms/golang-google-appengine.git /var/lib/mock/f40-build-2289479-55876/root/chroot_tmpdir/scmroot/golang-google-appengine
Cloning into '/var/lib/mock/f40-build-2289479-55876/root/chroot_tmpdir/scmroot/golang-google-appengine'...
$ git fetch origin d8fe0a9a67243e95d9b38a937c5a0ccf12f21415:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-google-appengine
 * [new ref]         d8fe0a9a67243e95d9b38a937c5a0ccf12f21415 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d8fe0a9 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild