$ git clone -n https://src.fedoraproject.org/rpms/rust-failure_derive.git /var/lib/mock/f40-build-2036281-48015/root/chroot_tmpdir/scmroot/rust-failure_derive
Cloning into '/var/lib/mock/f40-build-2036281-48015/root/chroot_tmpdir/scmroot/rust-failure_derive'...
$ git fetch origin 3e4bf0adc37ee7df02f0e03a6f5ff283808bb905:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-failure_derive
 * [new ref]         3e4bf0adc37ee7df02f0e03a6f5ff283808bb905 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e4bf0a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild