$ git clone -n https://src.fedoraproject.org/rpms/perl-CGI-Application-FastCGI.git /var/lib/mock/f45-build-21938-588/root/chroot_tmpdir/scmroot/perl-CGI-Application-FastCGI
Cloning into '/var/lib/mock/f45-build-21938-588/root/chroot_tmpdir/scmroot/perl-CGI-Application-FastCGI'...
$ git fetch origin 75f017093c1aaa58085b93e2e86f0e03f39560a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-CGI-Application-FastCGI
 * [new ref]         75f017093c1aaa58085b93e2e86f0e03f39560a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75f0170 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild