$ git clone -n https://src.fedoraproject.org/rpms/rust-nom5.git /var/lib/mock/f40-build-2170147-51013/root/chroot_tmpdir/scmroot/rust-nom5
Cloning into '/var/lib/mock/f40-build-2170147-51013/root/chroot_tmpdir/scmroot/rust-nom5'...
$ git fetch origin 8300b9b9be8e001376d2bc6287d955605c682d62:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nom5
 * [new ref]         8300b9b9be8e001376d2bc6287d955605c682d62 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8300b9b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild