$ git clone -n https://src.fedoraproject.org/rpms/nginx-mod-modsecurity.git /var/lib/mock/f40-build-2434593-60751/root/chroot_tmpdir/scmroot/nginx-mod-modsecurity
Cloning into '/var/lib/mock/f40-build-2434593-60751/root/chroot_tmpdir/scmroot/nginx-mod-modsecurity'...
$ git fetch origin 0e5220929b207174cf4497451bdedd231b1a7320:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nginx-mod-modsecurity
 * [new ref]         0e5220929b207174cf4497451bdedd231b1a7320 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e52209 Fix FTBFS - Closes rhbz#2261403