$ git clone -n https://src.fedoraproject.org/rpms/rust-hkdf0.11.git /var/lib/mock/f39-build-1521757-35856/root/chroot_tmpdir/scmroot/rust-hkdf0.11
Cloning into '/var/lib/mock/f39-build-1521757-35856/root/chroot_tmpdir/scmroot/rust-hkdf0.11'...
$ git fetch origin 6e58dd80b0472f5bee418dfe00f8432dc8ede1f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hkdf0.11
 * [new ref]         6e58dd80b0472f5bee418dfe00f8432dc8ede1f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e58dd8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild