$ git clone -n https://src.fedoraproject.org/rpms/golang-x-perf.git /var/lib/mock/f40-build-2294742-56294/root/chroot_tmpdir/scmroot/golang-x-perf
Cloning into '/var/lib/mock/f40-build-2294742-56294/root/chroot_tmpdir/scmroot/golang-x-perf'...
$ git fetch origin 42cce6ce9f8d6ac1a0ea65b78a2a61779f50777e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-x-perf
 * [new ref]         42cce6ce9f8d6ac1a0ea65b78a2a61779f50777e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42cce6c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild