$ git clone -n https://src.fedoraproject.org/rpms/perl-Text-Context.git /var/lib/mock/f45-build-26961-620/root/chroot_tmpdir/scmroot/perl-Text-Context
Cloning into '/var/lib/mock/f45-build-26961-620/root/chroot_tmpdir/scmroot/perl-Text-Context'...
$ git fetch origin e4f2b398707a697888fa14539ef89c6a05a29041:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Text-Context
 * [new ref]         e4f2b398707a697888fa14539ef89c6a05a29041 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4f2b39 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild