modify file 1 in master branch
Revert "modify file 1 in master branch"

This reverts commit a250d1adbf86384cc8439d08dd1e8f3033a912ff.
Revert "Revert "modify file 1 in master branch""

This reverts commit fcdf65f9f37ec3a2c404878412368732e599abe9.
add contents to clone file1
add content to origin file1
Revert "add content to origin file1"

This reverts commit f3c97ba7aab22fb4b9b8d192532f1ff83bcdbc6f.
add to file1
add content to file1
Merge branch 'b1'