$ git clone -n https://src.fedoraproject.org/rpms/texlive-scheme-tetex.git /var/lib/mock/f45-build-37068-711/root/chroot_tmpdir/scmroot/texlive-scheme-tetex
Cloning into '/var/lib/mock/f45-build-37068-711/root/chroot_tmpdir/scmroot/texlive-scheme-tetex'...
$ git fetch origin 352ecf10d262c9b0dfd316a34a4acc06a87f7a73:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/texlive-scheme-tetex
 * [new ref]         352ecf10d262c9b0dfd316a34a4acc06a87f7a73 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 352ecf1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild