$ git clone -n https://src.fedoraproject.org/rpms/perl-DateTime-Format-Builder.git /var/lib/mock/f45-build-22935-595/root/chroot_tmpdir/scmroot/perl-DateTime-Format-Builder
Cloning into '/var/lib/mock/f45-build-22935-595/root/chroot_tmpdir/scmroot/perl-DateTime-Format-Builder'...
$ git fetch origin fa562e95702f7cff0cfa6ed9bf273ef48e6175b7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DateTime-Format-Builder
 * [new ref]         fa562e95702f7cff0cfa6ed9bf273ef48e6175b7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa562e9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild