$ git clone -n https://src.fedoraproject.org/rpms/PyQt-builder.git /var/lib/mock/f40-build-2024416-47007/root/chroot_tmpdir/scmroot/PyQt-builder
Cloning into '/var/lib/mock/f40-build-2024416-47007/root/chroot_tmpdir/scmroot/PyQt-builder'...
$ git fetch origin b6830f5d0255c292244bf52b73c37be5bba72907:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/PyQt-builder
 * [new ref]         b6830f5d0255c292244bf52b73c37be5bba72907 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6830f5 Update to new upstream release 1.15.3 (#2244187)