$ git clone -n https://src.fedoraproject.org/rpms/texlive-collection-basic.git /var/lib/mock/f45-build-36953-709/root/chroot_tmpdir/scmroot/texlive-collection-basic
Cloning into '/var/lib/mock/f45-build-36953-709/root/chroot_tmpdir/scmroot/texlive-collection-basic'...
$ git fetch origin 2f85b28d9f48556ba90799e2afa2d6e7fba9de64:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/texlive-collection-basic
 * [new ref]         2f85b28d9f48556ba90799e2afa2d6e7fba9de64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f85b28 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild