$ git clone -n https://src.fedoraproject.org/rpms/libxcb.git /var/lib/mock/f41-build-856473-167627/root/chroot_tmpdir/scmroot/libxcb
Cloning into '/var/lib/mock/f41-build-856473-167627/root/chroot_tmpdir/scmroot/libxcb'...
$ git fetch origin d52231da3a4879deb67b2f4f3bda46526c8b4528:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libxcb
 * [new ref]         d52231da3a4879deb67b2f4f3bda46526c8b4528 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d52231d Make sure license is properly identified (#2315743)