$ git clone -n https://src.fedoraproject.org/rpms/adjtimex.git /var/lib/mock/f40-build-2194958-51502/root/chroot_tmpdir/scmroot/adjtimex
Cloning into '/var/lib/mock/f40-build-2194958-51502/root/chroot_tmpdir/scmroot/adjtimex'...
$ git fetch origin f54080d8e5b228257eea0198afab12b4c72487d8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/adjtimex
 * [new ref]         f54080d8e5b228257eea0198afab12b4c72487d8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f54080d convert license tag to SPDX