$ git clone -n https://src.fedoraproject.org/rpms/rust-unicode-ident.git /var/lib/mock/f45-build-45902-829/root/chroot_tmpdir/scmroot/rust-unicode-ident
Cloning into '/var/lib/mock/f45-build-45902-829/root/chroot_tmpdir/scmroot/rust-unicode-ident'...
$ git fetch origin 5ec396f90b736bdd888a3ea85ad52d5bc1fde265:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unicode-ident
 * [new ref]         5ec396f90b736bdd888a3ea85ad52d5bc1fde265 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ec396f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild