$ git clone -n https://src.fedoraproject.org/rpms/rust-git-version.git /var/lib/mock/f40-build-2660156-66918/root/chroot_tmpdir/scmroot/rust-git-version
Cloning into '/var/lib/mock/f40-build-2660156-66918/root/chroot_tmpdir/scmroot/rust-git-version'...
$ git fetch origin 52a2f67cdcd357ad5c382473f357071cd8c2372d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-git-version
 * [new ref]         52a2f67cdcd357ad5c382473f357071cd8c2372d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52a2f67 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild