$ git clone -n https://src.fedoraproject.org/rpms/perl-Perlbal-XS-HTTPHeaders.git /var/lib/mock/f41-build-side-1-2807174-32872/root/chroot_tmpdir/scmroot/perl-Perlbal-XS-HTTPHeaders
Cloning into '/var/lib/mock/f41-build-side-1-2807174-32872/root/chroot_tmpdir/scmroot/perl-Perlbal-XS-HTTPHeaders'...
$ git fetch origin 36832afaf7748002742ec69e20ba2f1c92db8816:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Perlbal-XS-HTTPHeaders
 * [new ref]         36832afaf7748002742ec69e20ba2f1c92db8816 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36832af convert GPL+ or Artistic license to SPDX