$ git clone -n https://src.fedoraproject.org/rpms/libcgi.git /var/lib/mock/f41-build-1028909-18369/root/chroot_tmpdir/scmroot/libcgi
Cloning into '/var/lib/mock/f41-build-1028909-18369/root/chroot_tmpdir/scmroot/libcgi'...
$ git fetch origin 0539f02a9ccff3848800000c64e830307f73d04b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libcgi
 * [new ref]         0539f02a9ccff3848800000c64e830307f73d04b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0539f02 Eliminate use of obsolete %patchN syntax (#2283636)