$ git clone -n https://src.fedoraproject.org/rpms/perl-Exporter-Easy.git /var/lib/mock/f45-build-23368-597/root/chroot_tmpdir/scmroot/perl-Exporter-Easy
Cloning into '/var/lib/mock/f45-build-23368-597/root/chroot_tmpdir/scmroot/perl-Exporter-Easy'...
$ git fetch origin 87e3345d2c56bf045aa3d54572b1f3717dd3142c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Exporter-Easy
 * [new ref]         87e3345d2c56bf045aa3d54572b1f3717dd3142c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 87e3345 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild