$ git clone -n https://src.fedoraproject.org/rpms/authselect.git /var/lib/mock/f40-build-2261781-54448/root/chroot_tmpdir/scmroot/authselect
Cloning into '/var/lib/mock/f40-build-2261781-54448/root/chroot_tmpdir/scmroot/authselect'...
$ git fetch origin 57537dcf9c7c622b034439a8c5008198e00e519e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/authselect
 * [new ref]         57537dcf9c7c622b034439a8c5008198e00e519e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57537dc authselect-1.5.0-1: rebase to 1.5.0