$ git clone -n https://src.fedoraproject.org/rpms/kdewebdev.git /var/lib/mock/f40-build-788745-135313/root/chroot_tmpdir/scmroot/kdewebdev
Cloning into '/var/lib/mock/f40-build-788745-135313/root/chroot_tmpdir/scmroot/kdewebdev'...
$ git fetch origin cbc207a76e0a32eb78426566f76f69950d520733:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdewebdev
 * [new ref]         cbc207a76e0a32eb78426566f76f69950d520733 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbc207a fixed bz#2261272 - FTBFS in Fedora rawhide