$ git clone -n https://src.fedoraproject.org/rpms/qgis.git /var/lib/mock/f41-build-1044532-19025/root/chroot_tmpdir/scmroot/qgis
Cloning into '/var/lib/mock/f41-build-1044532-19025/root/chroot_tmpdir/scmroot/qgis'...
$ git fetch origin d402f6bb8b8d8804199fd782637bb18c930e7a41:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qgis
 * [new ref]         d402f6bb8b8d8804199fd782637bb18c930e7a41 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d402f6b Rebuilt for exiv2 0.28.2