$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-WWW-Mechanize-PSGI.git /var/lib/mock/f45-build-26931-620/root/chroot_tmpdir/scmroot/perl-Test-WWW-Mechanize-PSGI
Cloning into '/var/lib/mock/f45-build-26931-620/root/chroot_tmpdir/scmroot/perl-Test-WWW-Mechanize-PSGI'...
$ git fetch origin 1ef2ce8947c63b7b1afedd10a0b82ce703a6dedf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-WWW-Mechanize-PSGI
 * [new ref]         1ef2ce8947c63b7b1afedd10a0b82ce703a6dedf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ef2ce8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild