$ git clone -n https://src.fedoraproject.org/rpms/texlive.git /var/lib/mock/f45-build-39617-748/root/chroot_tmpdir/scmroot/texlive
Cloning into '/var/lib/mock/f45-build-39617-748/root/chroot_tmpdir/scmroot/texlive'...
$ git fetch origin cf6626d02861caf07fb6010c5ee4c1b75ee4e191:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/texlive
 * [new ref]         cf6626d02861caf07fb6010c5ee4c1b75ee4e191 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf6626d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild