$ git clone -n https://src.fedoraproject.org/rpms/pmix.git /var/lib/mock/f40-build-2230451-53235/root/chroot_tmpdir/scmroot/pmix
Cloning into '/var/lib/mock/f40-build-2230451-53235/root/chroot_tmpdir/scmroot/pmix'...
$ git fetch origin 17d6621fb4f93d1eb9e76013b87ba612c0342ec1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pmix
 * [new ref]         17d6621fb4f93d1eb9e76013b87ba612c0342ec1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17d6621 Merge branch '4.2' into rawhide