$ git clone -n https://src.fedoraproject.org/rpms/perl-YAPE-Regex.git /var/lib/mock/f45-build-27604-625/root/chroot_tmpdir/scmroot/perl-YAPE-Regex
Cloning into '/var/lib/mock/f45-build-27604-625/root/chroot_tmpdir/scmroot/perl-YAPE-Regex'...
$ git fetch origin 9b0e5a7927ce59465dc4fd18d10cf96737b115b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-YAPE-Regex
 * [new ref]         9b0e5a7927ce59465dc4fd18d10cf96737b115b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b0e5a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild