$ git clone -n https://src.fedoraproject.org/rpms/lzma-sdk.git /var/lib/mock/f45-build-17873-505/root/chroot_tmpdir/scmroot/lzma-sdk
Cloning into '/var/lib/mock/f45-build-17873-505/root/chroot_tmpdir/scmroot/lzma-sdk'...
$ git fetch origin eb37951c073a6156552ac2668362db89ef19b822:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lzma-sdk
 * [new ref]         eb37951c073a6156552ac2668362db89ef19b822 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb37951 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild