$ git clone -n https://src.fedoraproject.org/rpms/perl-Sub-Exporter-Progressive.git /var/lib/mock/f45-build-26429-617/root/chroot_tmpdir/scmroot/perl-Sub-Exporter-Progressive
Cloning into '/var/lib/mock/f45-build-26429-617/root/chroot_tmpdir/scmroot/perl-Sub-Exporter-Progressive'...
$ git fetch origin 4e6c5ee1d7c66b2272a94b8815b787329ffd3f0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sub-Exporter-Progressive
 * [new ref]         4e6c5ee1d7c66b2272a94b8815b787329ffd3f0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e6c5ee Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild