$ git clone -n https://src.fedoraproject.org/rpms/rust-libmimalloc-sys.git /var/lib/mock/f38-build-side-42-init-devel-490048-24800/root/chroot_tmpdir/scmroot/rust-libmimalloc-sys
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-490048-24800/root/chroot_tmpdir/scmroot/rust-libmimalloc-sys'...
$ git reset --hard 81c11c82309a4c9b1c40210aec4e36dc94c1acc2
HEAD is now at 81c11c8 Update to 0.1.30