$ git clone -n https://src.fedoraproject.org/rpms/perl-App-p.git /var/lib/mock/f45-build-21769-588/root/chroot_tmpdir/scmroot/perl-App-p
Cloning into '/var/lib/mock/f45-build-21769-588/root/chroot_tmpdir/scmroot/perl-App-p'...
$ git fetch origin 712d07199547bab563bdf0fb843255b581e83a08:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-App-p
 * [new ref]         712d07199547bab563bdf0fb843255b581e83a08 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 712d071 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild