$ git clone -n https://src.fedoraproject.org/rpms/glibc.git /var/lib/mock/f40-build-763769-122657/root/chroot_tmpdir/scmroot/glibc
Cloning into '/var/lib/mock/f40-build-763769-122657/root/chroot_tmpdir/scmroot/glibc'...
$ git reset --hard 259d575cdf1efb48b486811f4faadbcd836f0cbc
HEAD is now at 259d575 glibc.spec: Depend only on RPM 4.14 features.