$ git clone -n https://src.fedoraproject.org/rpms/rust-git2_0.13.git /var/lib/mock/f38-build-side-42-init-devel-1393731-31050/root/chroot_tmpdir/scmroot/rust-git2_0.13
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1393731-31050/root/chroot_tmpdir/scmroot/rust-git2_0.13'...
$ git fetch origin 94d4f3174256f42e3ba2f7dab4226332911ab7f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-git2_0.13
 * [new ref]         94d4f3174256f42e3ba2f7dab4226332911ab7f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94d4f31 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild