$ git clone -n https://src.fedoraproject.org/rpms/arm-none-eabi-newlib.git /var/lib/mock/f40-build-2586100-62427/root/chroot_tmpdir/scmroot/arm-none-eabi-newlib
Cloning into '/var/lib/mock/f40-build-2586100-62427/root/chroot_tmpdir/scmroot/arm-none-eabi-newlib'...
$ git fetch origin fbb9dd5265feb7dffe37c703ed3977c961926607:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arm-none-eabi-newlib
 * [new ref]         fbb9dd5265feb7dffe37c703ed3977c961926607 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbb9dd5 updated to 4.4.0.20231231