$ git clone -n https://src.fedoraproject.org/rpms/PyX.git /var/lib/mock/f41-build-side-2-python-2707794-30463/root/chroot_tmpdir/scmroot/PyX
Cloning into '/var/lib/mock/f41-build-side-2-python-2707794-30463/root/chroot_tmpdir/scmroot/PyX'...
$ git fetch origin 1dbef4f16cf79bf3b628523c6248af90a7b7336e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/PyX
 * [new ref]         1dbef4f16cf79bf3b628523c6248af90a7b7336e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1dbef4f convert GPLv2+ license to SPDX