$ git clone -n https://src.fedoraproject.org/rpms/rust-anyhow.git /var/lib/mock/f39-build-2204407-51953/root/chroot_tmpdir/scmroot/rust-anyhow
Cloning into '/var/lib/mock/f39-build-2204407-51953/root/chroot_tmpdir/scmroot/rust-anyhow'...
$ git fetch origin 81df74f40c6df2a3cded596d78afc84a0ae0f8e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-anyhow
 * [new ref]         81df74f40c6df2a3cded596d78afc84a0ae0f8e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81df74f Update to version 1.0.79; Fixes RHBZ#2256297