$ git clone -n https://src.fedoraproject.org/rpms/perl-Proc-Guard.git /var/lib/mock/f41-build-side-1-2654834-27881/root/chroot_tmpdir/scmroot/perl-Proc-Guard
Cloning into '/var/lib/mock/f41-build-side-1-2654834-27881/root/chroot_tmpdir/scmroot/perl-Proc-Guard'...
$ git fetch origin d3bdc70402297a5c9dbda3d8205606ff296bfb8c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Proc-Guard
 * [new ref]         d3bdc70402297a5c9dbda3d8205606ff296bfb8c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3bdc70 convert GPL+ or Artistic license to SPDX