$ git clone -n https://src.fedoraproject.org/rpms/cockpit.git /var/lib/mock/f40-build-2209002-52150/root/chroot_tmpdir/scmroot/cockpit
Cloning into '/var/lib/mock/f40-build-2209002-52150/root/chroot_tmpdir/scmroot/cockpit'...
$ git fetch origin 38807b6a4182aeb64406c3e3314bfad746b7b22d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cockpit
 * [new ref]         38807b6a4182aeb64406c3e3314bfad746b7b22d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38807b6 [packit] 308 upstream release