$ git clone -n https://src.fedoraproject.org/rpms/rust-coreos-installer.git /var/lib/mock/f41-build-810568-146788/root/chroot_tmpdir/scmroot/rust-coreos-installer
Cloning into '/var/lib/mock/f41-build-810568-146788/root/chroot_tmpdir/scmroot/rust-coreos-installer'...
$ git fetch origin 1764caaf238d4b3a606391e9593eeeae69271743:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-coreos-installer
 * [new ref]         1764caaf238d4b3a606391e9593eeeae69271743 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1764caa Rebuild with Rust 1.78 to fix incomplete debuginfo and backtraces