$ git clone -n https://src.fedoraproject.org/rpms/rust-git2_0.14.git /var/lib/mock/f40-build-2389806-60524/root/chroot_tmpdir/scmroot/rust-git2_0.14
Cloning into '/var/lib/mock/f40-build-2389806-60524/root/chroot_tmpdir/scmroot/rust-git2_0.14'...
$ git fetch origin e7cf172cd9f55476a9bc66de778e588395baffd8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-git2_0.14
 * [new ref]         e7cf172cd9f55476a9bc66de778e588395baffd8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e7cf172 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild