$ git clone -n https://src.fedoraproject.org/rpms/python-qtsass.git /var/lib/mock/f41-build-side-2-python-2724777-30737/root/chroot_tmpdir/scmroot/python-qtsass
Cloning into '/var/lib/mock/f41-build-side-2-python-2724777-30737/root/chroot_tmpdir/scmroot/python-qtsass'...
$ git fetch origin 656efd48b4d0e7e8eadf763532c7523247900bf5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-qtsass
 * [new ref]         656efd48b4d0e7e8eadf763532c7523247900bf5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 656efd4 Drop conditional for F39 and older