$ git clone -n https://src.fedoraproject.org/rpms/kdelibs3.git /var/lib/mock/f41-build-1021804-18037/root/chroot_tmpdir/scmroot/kdelibs3
Cloning into '/var/lib/mock/f41-build-1021804-18037/root/chroot_tmpdir/scmroot/kdelibs3'...
$ git fetch origin 24ed99c05933b3980b30071b6641368fc8463ba4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kdelibs3
 * [new ref]         24ed99c05933b3980b30071b6641368fc8463ba4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 24ed99c Eliminate use of obsolete %patchN syntax (#2283636)