$ git clone -n https://src.fedoraproject.org/rpms/rust-convert_case.git /var/lib/mock/f40-build-1971289-25220/root/chroot_tmpdir/scmroot/rust-convert_case
Cloning into '/var/lib/mock/f40-build-1971289-25220/root/chroot_tmpdir/scmroot/rust-convert_case'...
$ git fetch origin a6da7bcb47f5ab9ebd22eb14620e3db2e11bd085:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-convert_case
 * [new ref]         a6da7bcb47f5ab9ebd22eb14620e3db2e11bd085 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6da7bc Fix typo in code block attribute to fix issues with Rust 1.80+