$ git clone -n https://src.fedoraproject.org/rpms/rust-libm.git /var/lib/mock/f37-build-side-31-rust-devel-115539-6183/root/chroot_tmpdir/scmroot/rust-libm
Cloning into '/var/lib/mock/f37-build-side-31-rust-devel-115539-6183/root/chroot_tmpdir/scmroot/rust-libm'...
$ git reset --hard d90f871d77b076a3fb138513ee234ccca7ed7a6d
HEAD is now at d90f871 Update to version 0.2.6; Fixes RHBZ#2141165