$ git clone -n https://src.fedoraproject.org/rpms/php-sabre-dav4.git /var/lib/mock/f40-build-2167165-50976/root/chroot_tmpdir/scmroot/php-sabre-dav4
Cloning into '/var/lib/mock/f40-build-2167165-50976/root/chroot_tmpdir/scmroot/php-sabre-dav4'...
$ git fetch origin 5dad4469bf61a375679cb7a2c73a0a26ac97fbdf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-sabre-dav4
 * [new ref]         5dad4469bf61a375679cb7a2c73a0a26ac97fbdf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5dad446 v4.6.0