$ git clone -n https://src.fedoraproject.org/rpms/kvirc.git /var/lib/mock/f41-build-813742-148788/root/chroot_tmpdir/scmroot/kvirc
Cloning into '/var/lib/mock/f41-build-813742-148788/root/chroot_tmpdir/scmroot/kvirc'...
$ git fetch origin 145c1614fc9c8510c2848838034263f3ec6bf8b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kvirc
 * [new ref]         145c1614fc9c8510c2848838034263f3ec6bf8b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 145c161 Perl 5.40 rebuild