$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-Async-HTTP-Server.git /var/lib/mock/f45-build-25241-610/root/chroot_tmpdir/scmroot/perl-Net-Async-HTTP-Server
Cloning into '/var/lib/mock/f45-build-25241-610/root/chroot_tmpdir/scmroot/perl-Net-Async-HTTP-Server'...
$ git fetch origin 69971f427e8a580dd7c333fb13baf92d43f85897:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-Async-HTTP-Server
 * [new ref]         69971f427e8a580dd7c333fb13baf92d43f85897 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 69971f4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild