$ git clone -n https://src.fedoraproject.org/rpms/adjtimex.git /var/lib/mock/f41-build-1120074-20264/root/chroot_tmpdir/scmroot/adjtimex
Cloning into '/var/lib/mock/f41-build-1120074-20264/root/chroot_tmpdir/scmroot/adjtimex'...
$ git fetch origin ad8fc87046dcfb9aaabb77d87bc818e9b39dd0fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/adjtimex
 * [new ref]         ad8fc87046dcfb9aaabb77d87bc818e9b39dd0fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad8fc87 Eliminate use of obsolete %patchN syntax (#2283636)