$ git clone -n https://src.fedoraproject.org/rpms/perl-AppConfig.git /var/lib/mock/f45-build-21797-588/root/chroot_tmpdir/scmroot/perl-AppConfig
Cloning into '/var/lib/mock/f45-build-21797-588/root/chroot_tmpdir/scmroot/perl-AppConfig'...
$ git fetch origin 40021afea6bd7b1c053b058a0230a81c6153f4fa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-AppConfig
 * [new ref]         40021afea6bd7b1c053b058a0230a81c6153f4fa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40021af Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild