$ git clone -n https://src.fedoraproject.org/rpms/httpdump.git /var/lib/mock/f40-build-2314922-57863/root/chroot_tmpdir/scmroot/httpdump
Cloning into '/var/lib/mock/f40-build-2314922-57863/root/chroot_tmpdir/scmroot/httpdump'...
$ git fetch origin dd222f41f32193e57fdff12449d9add251bc70e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/httpdump
 * [new ref]         dd222f41f32193e57fdff12449d9add251bc70e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd222f4 Merge remote-tracking branch 'refs/remotes/origin/rawhide' into rawhide