$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-UseAllModules.git /var/lib/mock/f45-build-26964-620/root/chroot_tmpdir/scmroot/perl-Test-UseAllModules
Cloning into '/var/lib/mock/f45-build-26964-620/root/chroot_tmpdir/scmroot/perl-Test-UseAllModules'...
$ git fetch origin fa7d26b3e1f059dcca4a1a9e674c565bb71f1f74:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-UseAllModules
 * [new ref]         fa7d26b3e1f059dcca4a1a9e674c565bb71f1f74 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa7d26b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild