$ git clone -n https://git.cclinux.org/stage/rpms/texlive.git /mnt/compose/mock/dist-circle8_8-updates-build-102595-52648/root/chroot_tmpdir/scmroot/texlive
Cloning into '/mnt/compose/mock/dist-circle8_8-updates-build-102595-52648/root/chroot_tmpdir/scmroot/texlive'...
$ git fetch origin b78ac1e6e7383809c7f3389b0b2b5296171d227c:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/texlive
 * [new ref]         b78ac1e6e7383809c7f3389b0b2b5296171d227c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b78ac1e import texlive-20180414-29.el8_8