$ git clone -n https://src.fedoraproject.org/rpms/rust-rpassword.git /var/lib/mock/f40-build-2039229-48249/root/chroot_tmpdir/scmroot/rust-rpassword
Cloning into '/var/lib/mock/f40-build-2039229-48249/root/chroot_tmpdir/scmroot/rust-rpassword'...
$ git fetch origin f2f2c7d30a55011f7a09aef21db923cf64efe5db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rpassword
 * [new ref]         f2f2c7d30a55011f7a09aef21db923cf64efe5db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f2f2c7d Update to version 7.3.1; Fixes RHBZ#2249259