$ git clone -n https://src.fedoraproject.org/rpms/rust-const_format.git /var/lib/mock/f40-build-2091816-50247/root/chroot_tmpdir/scmroot/rust-const_format
Cloning into '/var/lib/mock/f40-build-2091816-50247/root/chroot_tmpdir/scmroot/rust-const_format'...
$ git fetch origin f6fb757f41e742a93739bf0ff16887eccf8f1f45:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-const_format
 * [new ref]         f6fb757f41e742a93739bf0ff16887eccf8f1f45 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6fb757 Update to version 0.2.32; Fixes RHBZ#2244162