$ git clone -n https://src.fedoraproject.org/rpms/fast-cdr.git /var/lib/mock/f40-build-2347455-60102/root/chroot_tmpdir/scmroot/fast-cdr
Cloning into '/var/lib/mock/f40-build-2347455-60102/root/chroot_tmpdir/scmroot/fast-cdr'...
$ git fetch origin a728f8f21ed5eff0772f65d65d4d9929fdd24a5d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fast-cdr
 * [new ref]         a728f8f21ed5eff0772f65d65d4d9929fdd24a5d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a728f8f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild