$ git clone -n https://src.fedoraproject.org/rpms/rust-polling.git /var/lib/mock/f37-build-side-31-rust-devel-135515-8130/root/chroot_tmpdir/scmroot/rust-polling
Cloning into '/var/lib/mock/f37-build-side-31-rust-devel-135515-8130/root/chroot_tmpdir/scmroot/rust-polling'...
$ git reset --hard 8c705e890f8feba18916383f027a962590b3bcd2
HEAD is now at 8c705e8 Update to version 2.5.1; Fixes RHBZ#2137128