$ git clone -n https://src.fedoraproject.org/rpms/perl-Proc-SyncExec.git /var/lib/mock/f41-build-1108065-20090/root/chroot_tmpdir/scmroot/perl-Proc-SyncExec
Cloning into '/var/lib/mock/f41-build-1108065-20090/root/chroot_tmpdir/scmroot/perl-Proc-SyncExec'...
$ git fetch origin 564cbc5d8ef333af9bf660ba6e7e60481d9f5757:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Proc-SyncExec
 * [new ref]         564cbc5d8ef333af9bf660ba6e7e60481d9f5757 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 564cbc5 Eliminate use of obsolete %patchN syntax (#2283636)