$ git clone -n https://src.fedoraproject.org/rpms/rust-rustc-demangle.git /var/lib/mock/f38-build-side-42-init-devel-454800-22258/root/chroot_tmpdir/scmroot/rust-rustc-demangle
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-454800-22258/root/chroot_tmpdir/scmroot/rust-rustc-demangle'...
$ git reset --hard 279b371e1c65063b4a62b9094243fc7957e2e3ff
HEAD is now at 279b371 Update to version 0.1.22; Fixes RHBZ#2181289