$ git clone -n https://src.fedoraproject.org/rpms/matio.git /var/lib/mock/f41-build-811669-147477/root/chroot_tmpdir/scmroot/matio
Cloning into '/var/lib/mock/f41-build-811669-147477/root/chroot_tmpdir/scmroot/matio'...
$ git fetch origin 633f7e8cee072c9ea7a07da2f2c71a2fed66e42d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/matio
 * [new ref]         633f7e8cee072c9ea7a07da2f2c71a2fed66e42d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 633f7e8 1.5.27