@fooMonster article worked for me
100644 blob 55c0287d4ef21f15b97eb1f107451b88b479bffe script.sh As you can see the file has 644 permission (ignoring the 100). We would like to change it to 755:
commit the changes
[master 77b171e] Changing file permissions 0 files changed, 0 insertions(+), 0 deletions(-) mode change 100644 => 100755 script.sh