$ git clone -n https://src.fedoraproject.org/rpms/rust-value-bag-serde1.git /var/lib/mock/f40-build-2040585-48367/root/chroot_tmpdir/scmroot/rust-value-bag-serde1
Cloning into '/var/lib/mock/f40-build-2040585-48367/root/chroot_tmpdir/scmroot/rust-value-bag-serde1'...
$ git fetch origin 6d0a8f903d8740f5af5e79879ec7d3c319f721fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-value-bag-serde1
 * [new ref]         6d0a8f903d8740f5af5e79879ec7d3c319f721fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d0a8f9 Update to version 1.4.2; Fixes RHBZ#2244973