$ git clone -n https://src.fedoraproject.org/rpms/qgis.git /var/lib/mock/f40-build-2339501-59653/root/chroot_tmpdir/scmroot/qgis
Cloning into '/var/lib/mock/f40-build-2339501-59653/root/chroot_tmpdir/scmroot/qgis'...
$ git fetch origin e36d8fee6fb8f0afcbec271e3df0cdb509d176ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qgis
 * [new ref]         e36d8fee6fb8f0afcbec271e3df0cdb509d176ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e36d8fe Rebuild (libdraco)