$ git clone -n https://src.fedoraproject.org/rpms/perl-Syntax-Highlight-Perl6.git /var/lib/mock/f45-build-26338-617/root/chroot_tmpdir/scmroot/perl-Syntax-Highlight-Perl6
Cloning into '/var/lib/mock/f45-build-26338-617/root/chroot_tmpdir/scmroot/perl-Syntax-Highlight-Perl6'...
$ git fetch origin 3838055f2e895d71e6ab70e734810cca702ed985:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Syntax-Highlight-Perl6
 * [new ref]         3838055f2e895d71e6ab70e734810cca702ed985 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3838055 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild