$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-WWW-Mechanize-CGIApp.git /var/lib/mock/f45-build-26909-620/root/chroot_tmpdir/scmroot/perl-Test-WWW-Mechanize-CGIApp
Cloning into '/var/lib/mock/f45-build-26909-620/root/chroot_tmpdir/scmroot/perl-Test-WWW-Mechanize-CGIApp'...
$ git fetch origin 667b9598ed76b8a9d536caea5603b1de1132d207:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-WWW-Mechanize-CGIApp
 * [new ref]         667b9598ed76b8a9d536caea5603b1de1132d207 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 667b959 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild