$ git clone -n https://src.fedoraproject.org/rpms/texlive-collection-latex.git /var/lib/mock/f45-build-38048-719/root/chroot_tmpdir/scmroot/texlive-collection-latex
Cloning into '/var/lib/mock/f45-build-38048-719/root/chroot_tmpdir/scmroot/texlive-collection-latex'...
$ git fetch origin 49aac2b119d38bc71a764d78d15d6d83af55a2ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/texlive-collection-latex
 * [new ref]         49aac2b119d38bc71a764d78d15d6d83af55a2ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49aac2b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild