$ git clone -n https://src.fedoraproject.org/rpms/rust-anyhow.git /var/lib/mock/f40-build-2175683-51067/root/chroot_tmpdir/scmroot/rust-anyhow
Cloning into '/var/lib/mock/f40-build-2175683-51067/root/chroot_tmpdir/scmroot/rust-anyhow'...
$ git fetch origin a87603b5d507458556249e0e479e54361c8931a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-anyhow
 * [new ref]         a87603b5d507458556249e0e479e54361c8931a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a87603b Update to version 1.0.77; Fixes RHBZ#2255941