$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-credential.git /var/lib/mock/f41-build-side-1-2769249-32104/root/chroot_tmpdir/scmroot/rust-cargo-credential
Cloning into '/var/lib/mock/f41-build-side-1-2769249-32104/root/chroot_tmpdir/scmroot/rust-cargo-credential'...
$ git fetch origin 6948f8d0de497c03f948a84970dd1b9eec1ce5e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-credential
 * [new ref]         6948f8d0de497c03f948a84970dd1b9eec1ce5e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6948f8d Update to version 0.4.6; Fixes RHBZ#2299853