$ git clone -n https://src.fedoraproject.org/rpms/strace.git /var/lib/mock/f40-build-1897564-25065/root/chroot_tmpdir/scmroot/strace
Cloning into '/var/lib/mock/f40-build-1897564-25065/root/chroot_tmpdir/scmroot/strace'...
$ git fetch origin 653070345377453c345f6c3a4f7a7e5c73585179:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/strace
 * [new ref]         653070345377453c345f6c3a4f7a7e5c73585179 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6530703 6.10-1