Hello Rakesh Patel,
The git://git.freescale.com repository was decommissioned and won’t be back online. The content from the freescale.git repository was moved to the following repositories:
github.com/NXP
github.com/NXPMicro
https://source.codeaurora.org/external/imx/
In your case, in order to initialize the L4.1.15_2.1.0-ga BSP the command would change to:
$ repo init -u git://source.codeaurora.org/external/imx/fsl-arm-yocto-bsp.git -b imx-4.1-krogoth
$ repo sync
My apologies for the inconvenience!
Regards,